/*
 * The contents of this web application are subject to the Mozilla Public License Version 
 * 1.1 (the "License"); you may not use this web application except in compliance with 
 * the License. You may obtain a copy of the License at http://www.mozilla.org/MPL/.
 * 
 * Software distributed under the License is distributed on an "AS IS" basis, 
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License 
 * for the specific language governing rights and limitations under the License.
 * 
 * The Original Code is owned by and the Initial Developer of the Original Code is 
 * Composite A/S (Danish business reg.no. 21744409). All Rights Reserved
 * 
 * Section 11 of the License is EXPRESSLY amended to include a provision stating 
 * that any dispute, including but not limited to disputes related to the enforcement 
 * of the License, to which Composite A/S as owner of the Original Code, as Initial 
 * Developer or in any other role, becomes a part to shall be governed by Danish law 
 * and be initiated before the Copenhagen City Court ("K�benhavns Byret")            
 */

using Composite.C1Console.Security.Plugins.PasswordPolicy;
using Composite.Core.ResourceSystem;
using Composite.Data.Types;
using Microsoft.Practices.EnterpriseLibrary.Common.Configuration;

namespace Composite.Plugins.Security.PasswordRules.DifferentCharacterGroups
{
    [ConfigurationElementType(typeof(NonConfigurablePasswordRule))]
    internal class DifferentCharacterGroupsPasswordRule : IPasswordRule
    {
        public bool ValidatePassword(IUser user, string password)
        {
            bool lowerCaseLetters = false, upperCaseLetters = false, digits = false, otherCharacters = false;

            foreach (var ch in password)
            {
                if (char.IsLower(ch))
                {
                    lowerCaseLetters = true;
                    continue;
                }

                if (char.IsUpper(ch))
                {
                    upperCaseLetters = true;
                    continue;
                }

                if (char.IsDigit(ch))
                {
                    digits = true;
                    continue;
                }

                otherCharacters = true;
            }

            int points = 0;
            if (lowerCaseLetters) points++;
            if (upperCaseLetters) points++;
            if (digits) points++;
            if (otherCharacters) points++;

            return points >= 3;
        }

        public string GetRuleDescription()
        {
            return LocalizationFiles.Composite_C1Console_Users.PasswordRules_DifferentCharacterGroups;
        }
    }
}
